Automatic charge-heating control for internal-combustion engines



r 1,625,134 Aprll 19 D. P; MQLQNY AUTOMATIC CHARGE HEATING CONTROL FOR INTERNAL COMBUSTION ENGINES Filed Oct. 25. 1919 J9 Jv a Ii 15' Patented Apr. 19,. 1927.

UNITED STATES, PATENT OFFICE.-

nonann 'PLUMHER' MOLONY, or FLINT, moment, Assmnoa TO MARVEL can- BUBETER sour-m, or FLINT, MICHIGAN, a conrona'rxou or DTDIANA.

nuromrxc cnnnennnnrme courses non INTERNAL-COMBUSTION Enemies.

Application flied October 2a, 1919. Serial K0. 332,702.

This invention relates to. certain new and useful improvements in heatingmeans for heating the explosive charge for internal combustion engines, the object being to pro- 5 vide a device by means of which thegappli cation of heat on the in-going gases 's controlled by the exhaust, so that the proper amount of heat will be applied at all speeds of the engine.

Another object of my invention is to provide a device which can be readily applied to any of the well known type of charge forming devices, new in use, the construction being such that it is only necessa provide a heating chamber having an nlet provided with a valve controlled by the exhaust gas pressure in the exhaust line;

consists inthe novel features of construction, combination and arrangement-of parts,

hereinafter fully described-and out in the claims. I i

In thedrawings forming afpa'rtof'this specification:

combustion engine, partly in section fshow ing the ap li'cation of my improved con-- struction 0 heat control, and

Figure 2 is'a similar'view showing the carburetor provided with a heating chamber for heating the explosive charge.

Figure 3 is a perspective view of the valve. In Figure 1 of the drawing I have shown an internal combustion engine 1, provided with an intake manifold 2, to which is connected the carbureter 3, forming the charge forming device, and the particular construc: tion of ca'rbureter forms no part of this invention. The engine is providedwith the 40 usual exhaust pipe4, which extendsto the mufller, not shown, the above descri tion being given so that the application 0 my improved construction of heat control can be readily understood.

' In carrying out my invention, I provide a heating chamber 5, surrounding a portion of the manifold 2, said chamber being connected by inlet pipe 6, with the exhaust pipe 4, which is rovided with a ivoted valve 7,

w for control ing the admisslon of exhaust gases. The heating chamber is provided with an outlet pipe 8, connected to the exhaust line pipe 4 so that when the valve 'is in opened position, the exhaust gases can pass into the heating chamber, in order to apply heat to the manifold, whereby the exto the en ine.

In or er to control the heating medium which is applied through the heating cham-' chamber 9, as clearly shown, said plunger being connected to the valve operating arm 12 by a link 13-, so that as the plunger raises and lowers, the position of the valve will 'plosive charge will be heated inits passage be shifted in order to control the inlet of the heating chamber. -A coil spring 14, is

arranged under the plunger within the pres-' jsurechamberfi, and the ends of thechamber" 9, areconnected to the exhaust line pipe 4, With-these objects in view, the invention actuated through. the medium of the plunger by pipes 15 and 16, whereby the valve is' chamber 5', .so tha-t. the application of heat will be around the mixing chamber. In

both constructions the valve 7, is carried by a-valve stem 7, which is provided with a pin 17 adapted to be engaged by theshoulder of a collar 18, loosely mounted thereon, said collar having. an arm 19 extending-therefrom, to which is connected operating means drawing, I show a *srmila'rbonetrubtion with the exceptionthat the carbureter 3' isprovided'with a heat Figure 1 is a side elevation of'an internal;

20 controlled from the dash,jso that the valve can be held open in warming up the engine,

and while Lhave shown a particular construction for accomplishing this result, I do not wish to limit myself to the details shown, as'othermeans could-be employed for holding the valve open, without departing from the spirit of my invention. I have also shown a particular construction for automatically controlling the position of the who by the exhaust gas pressure, but I do not wish to limit myself to any details of construction as my invention consists broadly in automatically. controlling the heating medium applied for the purpose of heating the charge drawn'into the engine by the amount of the exhaust gas pressure in the exhaust line, and I am aware that other means could be employed for a'ccom lishing this result without departing from t e spirit of my invention.

From the foregoing description it will be bustion engine with automatic means for controlling the a plication of the heating medium employe for heating the ingoing gases in connection with manually operated means for resisting the automatic means to enable the engine to which the device is attached to be readily warmed up by allowing the gases to pass directly to the heating chamber. It will also be seen that the construction of valve is such that the same forms a deflector for causing the gases to pass into the inlet pipe of the heating chamber.

'What I claim is: 1. The combination with an internal combustion engine having an intake and exhaust pipe, a heating chamber for heating the charge passing through the intake, said heating chamber having an inlet and outlet connected to the exhaust pipe, a valve for controlling the intake of said chamber,

. means actuated by the velocity of exhaust gas in said exhaust pipe for adjusting the position of said valve, and manually operated means for holding said valve in a predetermined position.

2. An internal combustion engine having an exhaust pipe, intake manifold and carbureter connected thereto, a heater arranged to heat the charge in its passage from the carburetor to the engine, means for, consaid heater.

4. An internal combustion engine having memes an exhaust pipe, intake manifold and carbureter connected thereto, a heater in communication with said exhaust pipe for heating the charge in its passage from the carbureter to the engine, a valve for controlling the admission of heating fluid to said heater, :1 pressure chamber in communication with said exhaust pipe, and a plunger mounted in said pressure chamber for operating said valve.

5. An internal combustion engine having an exhaust pipe, intake manifold and carbureter connected thereto, a healer arranged to heat the charge in its passage from the carburetor tothe engine, a pressure chamher in communication with said exhaust pipe, a plunger in said chamber,'and means actuated by the gas pressure in said chamber, for controlling the admission of heating fluid to said heater.

6. An internal combustion en ine having an exhaust pipe, intake manifo d and carburetor connected thereto, a heater arranged to heat the charge delivered to the engine, said heater being in communication with the exhaust pipe, a valve for controlling the admission of exhaust gases to said heater, a pressure chamber in communication with said exhaust pi e, and a plunger mounted in said pressure c amber having a connection with said valve.

7. An internal combustion engine having an exhaust pipe, intake manifold and carbureter connected thereto, a heating chamber arranged to heat the charge in its passage from the carburetor to the engine, said heating chamber being in communication with the exhaust pipe, a valve for com letely cutting off the heat chamber from the ex haust pipe and means located outside of the exhaust pipe and in communication with the exhaust pipe for actuating said valve by the velocity of the exhaust gases passing through said exhaust pipe.

In testimony whereof I hereunto affix my signature.

DONALD PLUMMER MOLONVY. 

